Draft-regulator.



. J. MORELAND.

DRAFT REGULATOR.

APPLICATION FILED MAR.23, 1912.

Patented Nov; 1, 191?.

INVENTOR Mc/Mw'eland WITNESSES I ATTORNEYS UNITED STATES men.

DRAFT-REGULATOR.

To all whom it may concern.

Be it known that I, iV LLIs J. MORELAND, a citizen of the United States,and resident of Skanea-teles, in the county of Onondaga and State of NewYork, have invented a new and Improved Draft-Regulator, of which thefollowing is a full, clear, and exact description.

This invention relates tostoves and furnaces and has particularreference to means applied to or used in connection with smoke flues forcontrolling the draft through the fire box.

Among the objects of the invention isto provide improved meansfor soregulating the draft as to cause the direction of the draft to bereversed through the fire box by the manipulation of a single member.

Another object of the invention is to provide a draft regulator for a.fuel burner and so arranged in connection with a smoke flue and otherdevices as to provide for any desired regulation of the draft or heatthrough a single member arranged in or adjacent to the smoke flue,thereby eliminating all the trouble and annoyance incident to dampers ordrafts arranged at the front of the furnace or elsewhere.

lVith the foregoing and other objects in view the invention consists inthe arrangement and combination of parts hereinafter described andclaimed, and while the in vention is not restricted to the exact detailsof construction disclosed or suggested herein, still for the purpose ofillustrating a practical embodiment thereof reference is had to theaccompanying drawings, in which like reference characters designate thesame parts in the several views, and in which Figure 1 is a verticalsectional view of one form of my improvement together with suflicient ofa conventional form of furnace and smoke flue to illustrate its action;and

Fig. 2 is a similar view indicating a modified form of the invention.

Referring now more particularly to the drawings I show at 10 a. smokeflue having direct connection through a casing 11 and thimble 12 withthe fire box 13 of a furnace, the casing being on a level with thethimble 12 constituting an outlet from the fire box. 14 indicates agrate supporting the bed of fire as usual. 15 is an auxiliary pipe ofany suitable dimensions in cross sectional Specification of LettersPatent. Patentgd N 13 1917, Application filed March 23, 1917.

Serial No. 156,976.

form extending from the casing 11 down to a thimble 16 leading into theash pit 17 or space below the grate.

The casing 11 may be of any suitable form in cross section and-journa-led therein on a shaft or pivot pin 18 is a main damper 19 lyingon one side of the pivot pin 18 and normally closing the bottom ofthe'casing 11 or cutting off direct communication between the casing andthe auxiliary pipe 15. On the other side of the pivot pin 18 is a damperextension which may, for convenience of description be termed a checkdamper 20, but constituting in effect a part of the main damper 19inasmuch as they are always operated as a unit through the rocking ofthe pivot pin 18 which may be effected in any convenient manner as forexample through the crank 21 to which may be attached a rod or line 22leading to any desired place. Assuming that Fig. 1 shows the damper inits normal position it will be noted that the direct communicationbetween the fire box and the flue, or smoke pipe 10 is unobstructedthrough the thimble 12 and casing 11. The damper 19 at this time liesover the upper end of the auxiliary pipe 15 and the check damper liesagainst the bottom of the casing closing an opening 23 formed in thecasing at one side of the auxiliary pipe 15. Just below the shaft 18 theauxiliary pipe is cut away forming an opening 24 through which air mayenter normally and pass thence downwardly through the auxiliary pipe andthimble 16 into the space below the grate thereby providing for normalup-draft through the grate and bed of fire. Upon swinging the damperfrom its normal position through an angle of 90 degrees, as indicated indotted lines, the damper 19 will practically completely close directcommunication between the fire box and the smoke flue, at the same timethe check damper 20 will close the air inlet 24 in the auxiliary pipeleaving the opening 23 unguarded. Any up-draft under these conditionsthrough the smoke flue 10' will therefore serve to cause a reverse ordownward draft through the tions of the regulating member will givevarious results according to the amount of adjustment of such member.

In the modification of Fig. 2 the casing 11 is shown provided with asingle regulating member 19 mounted upon the pivot pin or shaft 18, butthe smoke flue 10 leads out from the top of the casing instead of at theend or side. The furnace parts are the same or may be of any other form.In this form of the invention the auxilary pipe 15 is shown as beingmade as a continuation or as a part of the casing 11. The damper 19f isjournaled substantially at its middle portion and is shown in thedrawing in its normal position lying diagonally across the easing 11between the normal smoke outlet of the casing and the air inlet 24:. Inother words as shown in full lines the course of the draft is inwardthrough the inlet 24, downward through the pipe 15' and thimble 16, intothe ash pit and thence upward through the fire box and out through thethimble 12 to the fine 10. hen, however, the damper is swung around itsaxis through an angle of 90 degrees, direct communication between thethimble 12 and the smoke flue is obstructed and indirect communicationis established between it and the fire copies of this patent may beobtained for five cents each, by addressing the Commissioner of Patents,7

box inwardly through the thimble 12 providing for any upward draftthrough the smoke fine to cause a down draft through the fire box. As inthe other form of the invention the varying degrees of regulation may beaccomplished by adjusting this damper to different intermediatepositions.

I claim:

The combination with a fire box having an outlet and a smoke fluecommunicating therewith, of a draft regulator comprising a casinginterposed between the fire box and the flue on a level with the outletfrom the fire box, an auxiliary pipe leading from the casing to thespace beneath thefire box, air inlet means to supply fresh air to thecasing and auxiliary pipe, and a single damper member mounted in saidcasing and serving in one extreme position to provide directcommunication between the fire box and the smoke fiue cutting offadmission of fresh air to the casing and cutting off directcommunication between the auxiliary pipe and casing and causing thefresh air to be admitted into the auxiliary pipe while in the otherextreme position the fresh air is admitted direct to the casing andthence through the fire box in a downward direction.

WILLIS J. MORELAND.

wumnmn, D. G.

